Flight Reliability
DL 2393 · Delta Air Lines
Raleigh–Durham → Boston (RDU–BOS)
62
A Little Dicey
WanderNerd Reliability Score
- 70%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 3.4%
- Cancelled
- 10 min early
- Median arrival delay
Based on 268 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 2393 arrived on time 76% of the time on Wednesdays and just 57% on Sundays. That gap is worth planning around.
Lagging the RDU–BOS route.
DL 2393 arrived on time 70% of the time, versus 79% across the RDU–BOS route.
Lagging the Delta Air Lines network.
DL 2393 arrived on time 70% of the time, versus 81% across the Delta Air Lines network.
Keep a backup plan handy.
DL 2393 was cancelled 3.4% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon68%(44 flights)
- Tue72%(47 flights)
- Wed76%(46 flights)
- Thu72%(43 flights)
- Fri72%(43 flights)
- Sat—(1 flights)
- Sun57%(35 flights)
71%
May
Jun 62% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 62% | 26 |
| July 2025 | 46% | 26 |
| August 2025 | 80% | 20 |
| September 2025 | 33% | 18 |
| October 2025 | 67% | 24 |
| November 2025 | 75% | 20 |
| December 2025 | 73% | 22 |
| January 2026 | 95% | 20 |
| February 2026 | 90% | 19 |
| March 2026 | 80% | 20 |
| April 2026 | 80% | 20 |
| May 2026 | 71% | 24 |
- Departures on time
- 68%
- Diverted
- 0%
- Flights flown
- 259
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 268 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.